(RNS) — Scientists have created a human embryo without the use of sperm or an egg — a true test-tube baby. Such embryos cannot (yet) develop into full-grown human beings. Even if transplanted into a ...

Sperm may lose their ability to navigate in microgravity, raising new questions about whether human reproduction is possible in space.

Scientists have detected microplastics in human semen and follicular fluid, the liquid that surrounds an egg in an ovarian follicle. "This is not an isolated finding –– it appears to be quite common," ...

Megan Molteni reports on discoveries from the frontiers of genomic medicine, neuroscience, and reproductive tech. She joined STAT in 2021 after covering health and science at WIRED. You can reach ...

A human embryo embeds itself into a fake uterus created by researchers. Screenshot from an Institute for Bioengineering of Catalonia video Sixty percent of miscarriages are caused by the failure of an ...

In 2016, two Japanese reproductive biologists, Katsuhiko Hayashi and Mitinori Saitou, made an announcement in the journal Nature that read like a science-fiction novel. The researchers had taken skin ...

Add Yahoo as a preferred source to see more of our stories on Google. Sex in space: Human reproduction beyond Earth policy must be urgently addressed, experts say As commercial spaceflight edges ...

Scientists have detected microplastics — the tiny and pervasive fragments now found in our seas, drinking water, food and, increasingly, living tissue — in human semen and follicular fluid, according ...

Wild animals that have acquired adaptations to maximize their reproductive output in some of the world's most extreme conditions may provide answers to some of the most pressing problems in the field ...

A comparison of seven nonhuman primate species has found both similarities and differences among the effects of age on female reproduction. Reproductive senescence has two components. One is fertility ...